Read the following information carefully and answer the questions given below :

P, Q, R, S, T and U are six employees of an organisation. There are at least two managers, at least two clerks and at least one officer among them. They work in three departments of COmputers, Sales and Marketing with at least two employees in each department. In no department there are employees belonging to same cadre. T works in Sales and is not a clerk. Q, a manager, works in Computers. P, the officer, works in Marketing, R, an officer, works with T. U does not work with P.